That's the verdict from average Joes and pro etiquette experts in response to behavior by President Trump, who boarded Air Force One in the rain on Monday to fly from Mar-a-Lago to Washington.

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As he did, 45 hogged a big black umbrella and left his soggy wife Melania and youngest son Barron trailing behind without a brolly— exposed, damp and on their own.

"We generally try to not comment on individuals, but in terms of principles of etiquette your rank doesn't absolve you from common courtesy," Daniel Post Senning, author and spokesperson for the Emily Post Institute, told the Daily News.

President Trump kept dry with an umbrella, while son Barron and wife Melania, who's behind Barron, board Air Force One in the rain. (Andrew Harnik/AP)

"The core tenet of good etiquette is thinking about other people," he added. "There's something classy and thoughtful about considering others."

The vast majority of rude behavior comes from "thoughtlessness," Senning continued. "One of the tricks of combating rudeness is paying attention to the people around us and by placing the comfort and ease of others in front of our own."